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Torque specs?
Posted: Sun Dec 06, 2015 1:53 pm
by Jholeman
Looking for torque specs. I'm working on a mark 3 250 and have a manual but after installing the flywheel I do not see any torque value in the manual. I was expecting a table like a lot of manuals have. Is there a go to place to get all of the torque specs?
Thanks,
Jeff
Re: Torque specs?
Posted: Mon Dec 07, 2015 3:56 am
by Craig in France
Ah! Welcome to the 1960s, Jeff ...
.
Actually, there is a value given in the manual*: 8.3 - 9.7 Kgm. Or 60 - 70 lb/ft, if you prefer.
HTH
Craig
* Pg 81.
Re: Torque specs?
Posted: Mon Dec 07, 2015 4:54 pm
by Jholeman
Thanks Craig, I'll have a look on pg 81, I sure didn't see it.
Re: Torque specs?
Posted: Tue Dec 08, 2015 1:11 am
by Craig in France
Right down the bottom ... (and called the "driving shaft nut").
No reason not to Loctite it as well, if you're feeling nervous ...
Re: Torque specs?
Posted: Sat Dec 12, 2015 5:48 pm
by Robin172
Torque specs I've always used on a 1968 MK3.
Head Bolts -25 ft/lb
Clutch Centre - 65 ft/lb
Bevel Gears - 35 ft/lb
Crank Drive Gear - 75 ft/lb
The engine on my bike has been apart numerous times as it's only used for racing.
Re: Torque specs?
Posted: Mon Dec 14, 2015 5:11 am
by Craig in France
Thanks for those, Robin. Useful
.
(For the clutch centre, I have tended to use the value given in the 860 manual which is slightly lower than yours at 7kgm = 50lb/ft. The Clymer singles manual quotes the same, i.e. 700-850 inch/pounds*, altho' I don't know where they got that from. Probably simply got their nuts mixed up, crank and clutch centre ...
. But, in any event, you're probably wise to err on the side of caution ...
)
* Incorrectly labeled as "ft-lbs". Now that would be tight ...
Craig
